/Engine/Source/Runtime/PakFile/Public/IPlatformFilePak.h
Looks for files or directories within the Pruned DirectoryIndex of the pak file. The Pruned DirectoryIndex does not have entries for most Files in the pak; they were removed to save memory. A project can specify which FileNames and DirectoryNames can be marked to keep in the DirectoryIndex; seeFPakFile::FIndexSettingsandFPakFile::PruneDirectoryIndexReturned paths are full paths (include the mount point)
template<class ContainerType> void FindPrunedFilesAtPath ( ContainerType & OutFiles, const TCHAR * InPath, bool bIncludeFiles, bool bIncludeDirectories, bool bRecursive ) const